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DL 740 system lock on Linux RH 7.3

Fabio Rossoni
Occasional Visitor

DL 740 system lock on Linux RH 7.3

i ve a DL 740 linux RH 7.3 system that handle a very high load of network traffic on GIGABIT NIC using EXT3 FS and EXT3 RAM disk to store data.
Now seams that when load increase and in conjunction with RAM DISK full situation the system LOCK with black screen no telnet no message in /var/log/messages and i'm only able to change the tty (CTRL+F1..) but i can't log in as root or any other users
Any Idea ?
tnks in advance
Steven E. Protter
Exalted Contributor

Re: DL 740 system lock on Linux RH 7.3

Your system is frozen.

Can you ping the network card?

If not power it off and back on again.

Then conduct a comprehensive review of what its doing, does it have enough processors, memory and swap.

If not make changes.

Depending on the NIC, if its a network load problem you may want to get a second nic and bond/team them to improve throughput.

May I ask what kind of NIC you are using. Take a look at the Linux list. This issue has been a beastie of a problem for me.

Steven E Protter
Owner of ISN Corporation
Fabio Rossoni
Occasional Visitor

Re: DL 740 system lock on Linux RH 7.3

tnks for answer SEP ,yes i think so the system is frozen .
In this situation ILO work show me the last command in console and also the ping work properly.
I ve four CPU (top show 8 for hypertradyng enabled) , 4 GB of RAM and the NIC card and drivers are the following:
tg3.c:v0.97 (Mar 13, 2002)
eth4: Tigon3 [partno(NA) rev 1002 PHY(5703)] (PCIX:100MHz:64-bit) 10/100/1000BaseT Ethernet 00:0b:cd:c5:12:d6
eth5: Tigon3 [partno(NA) rev 1002 PHY(5703)] (PCIX:100MHz:64-bit) 10/100/1000BaseT Ethernet 00:0b:cd:c5:12:d7
The kernel is 2.4.18-10.
In the last lock i red on the console the following message:
ENOMEM in do_get_write_access , retryng that on bugzilla appear only in keernel 2.4.18-5
Martin P.J. Zinser
Honored Contributor

Re: DL 740 system lock on Linux RH 7.3


I seem to remember reports of problems with 7.3 kernels on DL systems when the APIC option was activated. You might want to try to disable this during boot.

Greetings, Martin
Vitaly Karasik_1
Honored Contributor

Re: DL 740 system lock on Linux RH 7.3

I recommend you to switch to RHEL